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Intro

Connhex Mapper is a service that allows you to transform messages sent by devices in the field.

Mapping can happen at different scales. For example, you could:

  • redirect a message coming from a certain topic to a different one;
  • remap the message payload applying specific functions and directives.

Mapping operations are specified through the Connhex Mapper configuration.

Use cases​

Most of the time, your application won't need message mapping.

However, there are some situations where this option comes in handy. For example:

  • if your application needs to support a legacy protocol with a different sending format. In this case, remapping the message content to the new format is the solution;
  • if you need to process messages from a subset of all devices (and therefore certain topics) in a particular way, you can redirect them to a different topic;
  • if you need to extract a particular attribute from messages sent by devices and handle it separately.